Home / 64,543.04-89,066.40-39,394.88

Finding the Fourth Proportional to 64,543.04, 89,066.40 and 39,394.88

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Solution

The fourth proportional to 64,543.04, 89,066.40 and 39,394.88 is: 54,363.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,543.04 : 89,066.40 = 39,394.88 : x
  2. Step 2: Convert to fraction form
    64,543.04/89,066.40 = 39,394.88/x
  3. Step 3: Cross multiply
    64,543.04x = 89,066.40 × 39,394.88
  4. Step 4: Simplify right side
    64,543.04x = 3,508,760,140.03
  5. Step 5: Solve for x
    x = 3,508,760,140.03/64,543.04
  6. Step 6: Final answer
    x = 54,363.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.